package com.hhxy.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import java.io.IOException;

@WebFilter("*.jsp")
//拦截所有请求
public class FilterDemo1 implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        System.out.println("1、这是放行前的逻辑");
        //放行
        filterChain.doFilter(servletRequest,servletResponse);
        System.out.println("3、这是放行后访问完JSP后的逻辑");

    }

    @Override
    public void destroy() {

    }
}
